I think they're too soft for the street, for daily driving. If your car is just a weekend warrior, then sure
. I have a set of Toyo RA1's (very similar to the R888's, they're just the "old" design) and while I've driven them on the street, I've been lucky not to get stopped by cops for it!!
Once you get a few heat cycles into the tires, and start to wear them down, they run out of tread depth REALLY fast!!
... if you don't want dedicated racing tires, then just get the best street tire you can find
(I don't really know what to recommend there ...)